The Texas Supreme Court has reversed itself and granted the state's request to review a case dealing with the disclosure of an execution drug supplier that officials have fought for years to keep secret.

The Texas Supreme Court on Friday approved the state's appeal asking that it review a lower court's order that the state's prison agency must identify its execution drug supplier.

In June, the court had denied the state's request to review the ruling by Texas' 3rd Court of Appeals.

The case stems from a lawsuit seeking to identify the supplier Texas used in two 2014 executions. A measure was signed into law the next year allowing the state to keep future supplier records secret. Oral arguments in the case have been set for Jan. 23.